Measuring device in the connecting line between two electric power stations working in parallel



May 18 1926.

ACTIVE ENERGY SUPPLIED my a ACTIVE ENERGY SUPPLIED BY A POWER STATIONS WORKING IN PARALLEL Filed August 20, 1924 w. BEUSCH MEASURING DEVICE IN THE CONNECTING LINE BETWEEN TWO ELECTRIC IF REAcrwr: LOAD 1s cAPAclTwE KVAh (SUPPLY BY B) IF REACTWE LOAD l6 -CAPACITIVE.

(SUPPLY BY A) IF REACTIVE.

IHDUCTIVE. I(5UPPLY BY B) IF REACTIVE LOAD l5 INDUCTIVE.

(sunny BY A) 'lnvenlar:

E'atented May 18, 192.6, d

.EATENT tllFt'lQE.

WILLIE BE'USCl-I, OF ZUG, SFETZER-LAHD, ASSEGNDR T LANDTS & GYR S. A., OF ZUG, SVJITZEBLAND, A. FIRM.

IMEAS'URING DEVICE IN THE COJEINECTENG LENE BETWEEN TVJO ELECTRIC POWER STATIONS WORKING IN PARALLEL.

Application filed August 20, 1224. Serial No. 733,235.

For the complete measurement of, the grammatically represented, a measuring efiective and reactive ener y exchanged begroup is shown connected in a single-phase tween two power stations, six counting line connecting two power stations working trains are usually necessary, of which two in parallel. In this line are included a watt- 5 are fitted to watthour meters and the other hour meter 1 and a reactive meter 2. The four are fitted to reactive meters. The two watthour meter 1 is fitted with a contact watthour meter counting trains serve to levice 1 controlled by a pawl device. This register the useful energy supplied to or pawl device comprises a pawl 3 having an withdrawn from the system. Two of the arm acting as a counterpoise and an oper- 10 reactive meter counting trains record the ating lever 4. The latter, which is rotatable inductive energy and the other two counting about the point of attachment of the pawl trains the capacitive reactive energy during 3, is provided with two stop pins 5, 6 and the supply of withdrawal. is under the action of a spring 7 secured in The arrangement is usually such that the meter at the point 8. A push rod 9 is 15 several watthour meters and several reactive hinged to the operating lever 1. On the meters are employed. driving disc 10 of the watthour meter is The object of the present invention is to mounted a stop 11, 12 is the double counting etl'ect this measurement with the aid of two train in the watthour meter, and 18, 14 are meters only, one of the meters being a wattthe two double counting trains in the re- 20 hour meter and the other a reactive meter. active meter. Each of the latter is provided The watthour meter is provided with a with a pawl clutch 15 acting on a ratchet double counting train and the reactive meter wheel 16. The ratchet wheel 16 is rigidly is fitted with two double counting trains. attached toa toothed wheel 17 and, together The double counting train of the watthour with same, rides loosely on a shaft driven by 25 meter must be so arranged that the revoluhe meter. 7

tions of the meter disc are registered on one Each of the rocking shafts of the three or other of the two series of figure rolls of counting trains is under the action of one of this counting train according to the sense of the relays 18 which are connected to the rotation of the meter disc. The two double mains through the contact device 1. In the counting trains in the reactive meter also example of construction described, the pawl register according to the sense of rotation of clutches 15 all act in the same direction and the meter disc, one counting train registerone of the worms transmitting the drive ing, for example, when the disc when viewed from the main spindle 19 to the two count tron'ithe trout of the meter rotates from left ins; trains 13, 14 is right-handed and the to right, and the other counting train regisother of these worms is left-handed.

tering when the disc rotates inthe opposite The operation of the metering equipment direction. Both counting trains are changeddescribed is as follows 1- 7 over so that the energv is registered on the Assuming that the energy flows from left upper sets of figure rolls, when the direction to right and that the reactive energy is in of rotation of the watthour meter is re ductive, the watthour meter will. rotate from q qea change -ovgp is effected 3,11 t0 l'l fl'llt G. in the Clll'GCillOTl Of the 3,1-

olectrical. relay controlled by a contact in row 20. The reactive meter will rotate in the watthour meter. This contact is closed the Same direction. The relays 18 are not when the direction of rotation of the wattenergized and thus all the counting trains hour meter changes, i. e. when the flow of are connected to the lower set of figure energy in the connecting lines between the rolls. Thus, the lower set of figure rolls in two power stations is reversed. The accomthe watthour meter and the lower set of panying drawing is a diagrammatic eleva figure r lls of the lower counting train 14 v H tion of measuring apparatus constructed in tl e reactive meter register. Should the 109 m and arranged accordance with this invcn ive load n f h lie capacitive, the di-l t in the ample or: construction rewind cit ire of reactive mete would be reversed, i. e. the lower set of figure rolls of the upper double counting train 13 of this meter would register. If, new, with this state oi reactive load the direction of flow of the useful or active energy were to change, the sense of rotation of the watthour meter would be reversed and the contact 1 would be closed. At the same time, all the relays 18 ot the three double counting trains would he energized and the counting trains changed-over to the upper sets of figure rolls. In this manner, the useful or active energy would be registered on the upper set of figure rolls in the watthour meter and the capacitive reactive energy would be registered on the upper set of figure .rolls of the double counting train 13 in the reactive meter. ginnmarizii'ig one The lower set of figure rolls of the double counting train in the watt-hour meter registers the useful or active energy supplied, whilst the upper set of figure rolls measures the active energy withdrawn. The lower counting train in the reactive meter registers the inductive reactive energy, the lower set of figure rolls registering the energy which leads the left hand power station, when useful or active energ is supplied, and the upper set of figure rolls registering the energy when useful or active energy is withdrawn. The upper double counting train in the reactive meter measures the capacitive reactive energy, the lower set or" figure rolls measuring the energy passing during supply, and th upper that which is present during withdrawal.

For the sake of simplicity, the measuring equipment has only been shown as applied to a single-phase line. It is obvious, however, that this measuring arrangement can also be applied to polyphase connecting lines.

The contact device 1' could also be combined with the counting train 12. Moreover, the changeover of these counting trains could. also he effected mechanically.

The pawl clutches 15 could also work in opposite directions, in which case, however, the worms on the main spindle would both be cut in the same direction and one of the counting trains could also he provided with an additional transmission gear.

lVhat I wish to secure by Letters Patent is:-

1. A measuring device in the con: line between two power stations working parallel, comprising one watthour meter and one reactive meter, said wattliour meter having one double counting train and said reactive meter having two double counting trains, of which double counting trains each of the latter-registers according to one direction of rotation, and means which change over both the double counting train in the watthour meter and the two double count ing trains in the reactive meter when the direction of rotation of the watthour meter changes.

2. A measuring device in the connecting line between two power stations working in parallel, comprising one watthour meter and one reactive meter, said watthour meter hav ing one double counting train and said reaetive meter having two double counti g trains, of which double counting trains each of the latter registers according to one rection of rotation, a pawl device and a contactdevice in the watthour meter, and three relays, each of which acts on one of the double counting trains, said pawl devi e influencing the contact device according to the direction of rotation of the spindle of the watthour meter, and said contact device acting on the relays.

3. A measuring device in the connec line between two power station working in parallel, comprising one wattheur meter l one reactive meter said watthour mete l ing one double counting train and said active meter having two double countii trains, of which double counting trait of the latter registers according to one direction of rotation of the spindle ot the active motor, a pawl device in each of the double counting trains in the reactive meter, of which pawl devices one puts its double counting train out of operation when the driving disc of the reactive meter li'llltli'flfi in one direction and the other pawl device puts its double counting train out of operation when the said driving disc rotates in the op posite direction.

In witness whereof I uilir; my

signatu rc.

\VlLLl BE i k i' i'. 

